Campbell CPEC300, Руководство по эксплуатации продукта

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Appendix K. CPEC310 Scrub Module Installation, Operation, and Maintenance
K-2
The CPEC310 scrub module pump pulls ambient air through three bottles of
molecular sieve and pushes it to the valve module. The ambient air inlet and
zero air outlet fittings are on the bottom of the enclosure. It uses a small
diaphragm pump that is mounted in an insulated, temperature-controlled box
inside the weather-tight fiberglass enclosure.
The following are descriptions of the operating parameters of the scrub pump.
Pump Control
The pump is turned on automatically when the Zero Air valve is selected. The
pump has a maximum flow rate of approximately 2.0 LPM and a maximum
pressure rise of approximately 90 kPa.
Scrub Pump Outlet Pressure
The measured outlet pressure of the pump is reported in public variable
scrub_press
. This pressure will normally be 1 to 23 kPa when it is running.
Scrub Pump Temperature
The temperature of the scrub pump is reported in public variable scrub_tmpr .
The operating range of the pump is 5 to 50 °C. If the scrub temperature is
within the operating range the public variable scrub_tmpr_ok will be set to
True . If the scrub pump temperature is outside this range, the CPEC310 will
disable the pump and the public variable scrub_tmpr_ok will be set to False .
The scrub pump module has a heater (drawing 8W while operating) that turns
on if the pump temperature falls below 7 °C. If the CPEC310 is started at cold
temperature, it may take up to 20 minutes to warm the scrub pump module
(from –30 to 5 °C). When it reaches 7 °C the heater will cycle on/off as needed
to maintain this temperature.
The scrub pump module has a fan (drawing 0.7 W while operating) that turns
on if the pump temperature rises above 45 °C. The fan will stay on until the
scrub pump temperature falls below 40 °C.
K.2 Scrub Module Specifications
Operating temperature:
−
30 to 50
°
C
Power consumption 1/
Quiescent: 0 W
With pump on: 2 W
With heater on: 8 W
With fan on:
0.7 W
K.3 Installation
There are numerous mounting options for the scrub module including tripod
(mast or leg), tower, or pole. Enclosure mounts are specified when ordering the
CPEC310 Scrub Module and mounting the module is accomplished in the
1/
The typical average power consumption is generally negligible in a CPEC310 system
because it is used for a short time each day.